Register-hook



H. H. SIRAIT.

REGISTER HOOK.

APPLICATION FILED FEB. IB, I919. 1,330,454. Patented Feb. 10,1920.

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To all whom it mdy concern: j V Be it known that I, Hosna'H, STRAIT, a

' citizen of the'United States of America, a

resident of Overland, in the county of St. Louis, State of Missouri, have invented certa n new and useful Improvements in Register-Hooks, of which the following is a full,

clear, and exact description, reference being had to the accompanying drawings, forming a partof this specification.

. My invention relates to a register hook vide a register hook of very compact 'forin and so constructed as to afiord a maximum of strength and a minimum liabllity of n jury due to the strain nnposed uponthe parts in effecting 'a'clamping' operation between the register hook andthe part to be.

held thereby.

Figure I is a side elevatlon of one of my register hooks shown in engagement with the printing plate. I I

v Fig. II is'a vertical longitudinal section through the block shown in 'engagementwith the printing plate. r j

' Fig. III is a 'front'elevation,

Fig. IV is a rear elevation.

' Fig. V is a perspect'vev'iew of the'block and adjustable members of my register hook shown separated from each other.

In the drawings, A designates the block or main body portion of my register hook. This block is provided with asemi-circular recess 1 extending from end to end of the block and open at the top of the block,-so that the adjustable elements to be hereinafter de-' scribed may travel throughout the length of the block without any interference. wall of the recess .1 is provided with a screw thread 2 extending throughout the length of the recess. The margins of the open top of the block are preferably inclined as shown at 8.

B designates an adjustment screw operable from end to end of the recess in the' block A, as seen in Figs. I and II, and by g The Specification of evergreen. 'Pate t dF fi pplication 'filed Februar is, 1e19 aria H 10 27?.8778.

HOSEA H. STEAIT, or ovnnLAni), /rissoniu.

'ticu'lar function to"be hereinafterfreferredto. j The screw may be rotated-in theblock in i any suitable "manner, to provide for 1ts' rotation I I "preferablyforin transverse holes a therein'for'ahe reception are vtool, such as 'shown-in-dotted lines, Fig; IV." The screw may also "contain 'af'centralYnon circular hole-5. extending longitudinally of the screw and to which the tool may befapplied forjquick lactionj'in backing up the screw; Thead ustmentscrewBjis provided at its 7'0 forwardfend witlra circular bearing stem 7) of smaller d ameter than the screw, this stern partakingofrwhatever movement is a bartaken'of'by the screw. i Y

" Q desi Hates the body'of berfloosely,mounted on the b aring; of

the adjustment screw B, an that x-said stem movement jbut the clan 115i 11g member b o'dy partaking of only 'a straightmovement. g The. clamping member 'bodyfCei tends upwardlythrough the open to'p of tlie recess 1 in the'bloclrAand hasIthereonfja trans versely extending clampin'glugb, which extendsabove the top of the 'blo'clrfA and 'across 'said b'locksothat it'is in position'to engage inayturn' within sa idfbody'fwhile the'adl V justment screw is: moved"longitudi nally of the block Ag-the screw rotating during' its a printing?plate OrbtherJprinting devlce X resting upon theblock A. s 5 Byrefer'rin to Fig. II it will be seen that'the lug 6 is'joosi tioned immediately in front er the pet the screw constantlyserves as an abutment T iphe elliwrt vn fthie a tme r J3. which protrudes above tlie' 'block "A, "and that therefore such peripheral portion ofc 7 o1- backing for the lug 6. The lug 6 extends upwardly from the rearmost portion ofthe' clamping member body C, and on said body a in front of the bottom of said lug. is a ledge e of the block A and therefore affords a seat for the printing device 'X', the SaidfSBat ex- 5 tending entirely across the" top of the recess- 1 and preventing the descent of narrow} printing j devices into said recess. The 1 clamping h1g6 is preferably formed with a 7 which is flush with the two top surfaces curved front face 6 (see Figr-V) forengage-" ment with the printing object'fX, a face of this Shape ng desirable inford' th the lug will better engage the printing object if the edge of the object presented to the lug is uneven, or does not lie'in a'line exr a vanced' toward the objects to be held therea r a of printing objects may be held'withinthe tending at right 'anglesto the; direction of movement of the clampinglug.

In the use of my register hooks anyde-i sired number. of the hooks may be located withina printers chase and locked there in by the usual furniture, and the printing the clamping member bodies G will be adhybetween the" clamping lugs 6. I r 7 There are many advantages 1n my register {hoo'k over the usual register hooks, which may be enumerated as follows: I he deviceis simple and inexpensive to manufacture, owing to the small number of parts and the simplicity of their construction." The parts are compactly arranged and so disposed relative to each other as to afforda high degree of strength, and the application ofjstrain in'such manner as to avoid injury or breakage of the parts. In

this latter connection, it is to be observed that the clamping member body C is pressed forwardly by impact of the screw thereagainst, hence the screw exerts a pressure on .the clamping portion of the device, and the i screwf itself, being engaged with the block' '30 adjustment screw B, by projecting above the block of the register hook, lies directly back of the clamping-lug 6; and therefore. furnishes an abutment for the clampinglug, which avoids all possibility of'the clamping lug being injured by strain, even though it has only a limited connection with the clamping member body that carries it. M One very important combination of features of my, presentimprovement is that of screw the block having a screw threaded recess extending lengthwise therof from end to end and open at theto of the block, and th'e adjustment screw operable throughout, the length of the block without interference by any barrier, such as a bridgepiece extending across the recess. This combination renders it possible to makeuse ofthe entire length'of the block A in adjusting the clamp ng lug 6, hencesmaller-regmter hooks may be utilized and a greater number a chase, and such objects may be arranged to better advantage than is possible in using the registerhooks heretofore in use. Iclaim: i s 1. A register hook comprising a block channeled from end to end and having ascrew thread extending throughout the length of the block, the top of'the channel wholly unobstructed, an adjustment operable in, engagement, with said screw thread to the extreme ends of the block, and a clamping device carried by said adjustmentscrew. a f

2; A. register hook comprising a block having a channel therein extending from end to end of the block and having ,a screw thread extending throughout the length of being the block,thetop of the channel 7 being- Wholly unobstructcdfan adjustment screw operable inengagement with said screw thread, said adjustment screw being of sufli- "cient diameter to extend above the top .surface of said block, and a clamping device carried by said adjustment screw, the work engaging portion of'sa'id clamping device being located above the top of the block and resting against the portion of the adjustment screw projecting above said block,

- whereby the strain imposed upon said work engaging portion is imposed directly against sald adjustment screw. I

Intestimony that I claim the foregoingfI hereunto aflix my signature.

HOSEA'H. mm, 

